M A S S , L E N GT H A N D VO LU M E

MEASURMENT

HAVE YOU MEASURED ANYTHING TODAY?

• Have you measured an object?• Have you measured an interval of time?• Have you measured the weight of an object?• How did you measure it?

AIMS

• Looking at Assumptions• Revisit units of length, volume and mass • Investigate how we measure these units

BASIC QUANTITIES

• The unit of Length is the meter (m)• What are some multiples of this?

• The unit of Area is meter squared (m2) • The unit of Volume is meters cubed (m3)

• The unit of Mass is the kilogram (kg)• What are some multiples?

• The unit of Time is seconds (s)

MEASURING OBJECTS

• Using prior knowledge take the most accurate measurements of the following

Friends height

Length of pen

Diameter of a coin

Thickness of a piece of paper

Width of string

Volume of metal cube

Volume of a rock

• How can we be more accurate?

HUMAN REACTION TIME

• How do we measure time?• Reaction time concepts• Mental Processing time• Movement time• Device time• What are some instances where your reaction

time can be very important?

• How far does the ruler drop?Attempt 1 2 3 4 5

Distance

• Did you improve with each try?

PENDULUM

• http://phet.colorado.edu/sims/pendulum-lab/pendulum-lab_en.html